①With regard to a person who was an insured before October 1, 1957 and whose period of having been an insured from that day to July 31, 1976 (including a period deemed to be a period of having been an insured covered by employees' pension insurance pursuant to the provisions of Article 47, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. (Act No. 34 of 1985; hereinafter referred to as the "1985 Amendment Act"), Article 5, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the Employees' Pension Insurance Act, etc. (Act No. 82 of 1996) or Article 6 of the Supplementary Provisions of the Act to Abolish, etc. the Mutual Aid Association Act for Employees of Agricultural, Forestry and Fishery Organizations, etc. for the Purpose of Integrating the Employees' Pension Insurance System and the Mutual Aid Association System for Employees of Agricultural, Forestry and Fishery Organizations (Act No. 101 of 2001); the same applies hereinafter in this Article) is three years or more (where there is a period of having been an insured that, pursuant to the provisions of Article 51 of the Employees' Pension Insurance Act, is not used as the basis for calculating the amount of an employees' disability pension, a person for whom the period excluding that period is three years or more), when the pension amount is calculated for the insurance benefits paid to a person who has come to have the right to receive insurance benefits on or after November 1, 1969 (limited to a person prescribed in Article 20, paragraph (1) of the Supplementary Provisions of the Act Partially Amending the National Pension Act, etc. (Act No. 18 of 2000; hereinafter in this Article referred to as the "2000 Amendment Act"); the same applies in the following paragraph), notwithstanding the provisions of Article 20, paragraph (1), item (i) of the Supplementary Provisions of the 2000 Amendment Act, the period of having been an insured before October 1, 1957 is not used as the basis for calculating the average standardized monthly amount of remuneration (meaning the average standardized monthly amount of remuneration prescribed in Article 43, paragraph (1) of the Employees' Pension Insurance Act prior to its amendment by the provisions of Article 6 of the 2000 Amendment Act; the same applies in the following paragraph).

②With regard to a person whose period of having been an insured from October 1, 1957 to July 31, 1976 is less than three years and whose period of having been an insured up to that day is three years or more, when the pension amount is calculated for the insurance benefits paid to a person who has come to have the right to receive insurance benefits on or after November 1, 1969, notwithstanding the provisions of Article 20, paragraph (1), item (i) of the Supplementary Provisions of the 2000 Amendment Act, the periods of having been an insured up to July 31, 1976 other than the most recent three years are not used as the basis for calculating the average standardized monthly amount of remuneration.